LENORA INSTITUTE OF DENTAL SCIENCES
CENTRAL LIBRARY
1
421-NR/402-OR
DR. NTR UNIVERSITY OF HEALTH SCIENCES::AP::VIJAYAWADA-520 008
B.D.S. DEGREE EXAMINATION JANUARY, 2017
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1) Discuss in detail composition, classification and
properties of Porcelain. Add a note on CAD CAM
ceramics.
2+2+3+2=9
2)
Define tarnish and corrosion. Explain causes and types
of corrosion.
2+3+4=9
WRITE SHORT NOTES ON
:
8x4=32
3) Evaluation tests for biocompatibility of dental
materials.
4) Failure of Hydrocolloid impressions
5) Fillers in composite resin.
6) Classify direct filling gold
7)
Hygroscopic setting expansion
8)
Phosphate bonded investments
9)
Mercury toxicity
10)
β
–
Titanium Alloys
WRITE BRIEFLY ON
:
10x2=20
11) Calcium Hydroxide
12) Contact angle
13) Sprue Former
14) Advantages of Glass Ionomers
15)
Solidification defects
16)
Three body abrasion
17)
Varnish
18)
Delayed expansion
19)
Co polymer
20) Smear layer
---
LENORA INSTITUTE OF DENTAL SCIENCES
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421-NR/402-OR
DR. NTR UNIVERSITY OF HEALTH SCIENCES::AP::VIJAYAWADA-520 008
B.D.S. DEGREE EXAMINATION JUNE/JULY, 2016
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1) Classify impression materials. Describe the
composition, gelation reaction and properties of
irreversible hydrocolloids.
3+2+2+2=9
2)
What are dental composites? Write in detail about
the composition and properties of hybrid composite
resins.
1+5+3=9
WRITE SHORT NOTES ON:
8x4=32
3) Bonding Agents
4)
Gold Foil
5)
Curing cycles of heat cure acrylic denture base resins
6)
Dentifrices
7)
High copper amalgam alloys
8) Incomplete casting
9) Micro hardness testing methods
10) Type III dental gypsum product
WRITE BRIEFLY ON:
10x2=20
11)
Clas
sification of dental casting alloys
12)
Composition of Zinc Oxide Eugenol Impression Pastes
13)
Ductility and Malleability
14)
Contact angle of wetting
15) Die materials
16) Rouge
17) Manipulation of Zinc Phosphate Cement
18) Metamerism
19) Titanium implant material
LENORA INSTITUTE OF DENTAL SCIENCES
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402OR/421NR
DR NTR UNIVERSITY OF HEALTH SCIENCES :: VIJAYAWADA :: AP
B.D.S. DEGREE EXAMINATION JANUARY, 2016
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1)
Define setting time of Gypsum products. Mention
and explain different methods of measuring setting
time. Add a note on theories of setting time and
disinfection of Gypsum products.
2+3+2+2=
9
2)
Name the various anterior esthetic restorative
materials used, write the composition, properties
and manipulation of glass ionomer cement. Add a
note on sandwich technique.
2+2+2+1+2
=9
WRITE SHORT NOTES ON
:
8x4=32
3)
Pit and Fissure sealant
4)
Composition and manipulation of inlay wax
5)
Compare wrought and cast alloys
6)
Back pressure porosity
7)
18
-
8 stainless steel
8)
Dental solders
9)
Microfil
led composite resin
10)
Calcium Hydroxide cement
WRITE BRIEFLY ON
:
10x2=20
11)
Cavity varnish
12)
Coupling agent
13)
Sprue former
14)
Flux
15)
Trituration
16)
Strengthening of Dental Porcelain
17)
Gutta percha
18)
Tray Adhesive
19)
T
arnish and Corrosion
20)
Denture relining
- - -
LENORA INSTITUTE OF DENTAL SCIENCES
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402OR/421NR
DR. NTR UNIVERSITY OF HEALTH SCIENCES::AP::VIJAYAWADA-520 008
B.D.S. DEGREE EXAMINATION JUNE/JULY, 2015
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1) Classify dental ceramics. Write the composition of dental
porcelain. Discuss the methods of condensation of dental
porcelain and uses of porcelain.
3+2+2+2=9
2) Write the composition, properties, advantages and
disadvantages of amalgam alloys. Add a note on classification
of amalgam alloys.
2+2+1+1+3=9
WRITE SHORT NOTES ON
:
8x4=32
3) Zinc oxide Eugenol impression paste
4) Syneresis and Imbibition
5) Gold Foil
6) Light cure composites
7) Dustless alginate
8) Zinc phosphate cement
9)
Soldering and Welding
10)
Dental
implant materials
WRITE BRIEFLY ON:
10x2=20
11) Chemical adhesion
12) Pumice
13) Inlay Wax
14)
Localised shrinkage porosity
15)
Die materials
16) Rake angie
17) Sandwich Technique
18) Etching
19) Rouge
20) Creep
---
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402OR/421NR
B.D.S. DEGREE EXAMINATION - JANUARY, 2015
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1)
Classify waxes used in Dentistry. Describe the
composition, manipulation and uses of Inlay wax.
3+2+2+2=
9
2)
State the ideal requisites of luting cements. Give the
composition, chemistry of setting and properties of
glass ionomer cements.
2+2+2+3=
9
WRITE SHORT NOTES ON
:
8x4=32
3)
Addition poly silicone impression material
4)
Delayed expansion
5)
Ductility and Malleability
6)
Factors affecting cutting efficiency of dental burs
7)
Hybri
d composite resins
8)
Ni
–
Ti orthodontic wire
9)
Sprue former
10)
Tissue conditioners
WRITE BRIEFLY ON
:
10x2=20
11)
Advantages of Gypsum bonded investment
materials
12)
Eames Technique
13)
Colour parameters
14)
Composition of impression
compound
15)
Diamond abrasives
16)
Functions of separating medium
17)
Non cohesive gold
18)
Porcelain condensation techniques
19)
Soldering flux
20)
Stages of annealing heat treatment
- - -
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402OR/421NR
B.D.S. DEGREE EXAMINATION JUNE, 2014
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1)
Describe the composition, stages of mixing and
curing cycles of heat cure acrylic denture base
resins.
3+3+3=9
2)
Classify gypsum materials. Discuss in detail dental
stone.
3+6=9
WRITE SHORT NOTES ON
:
8x4=32
3)
Acid etching technique
4)
Castable glass ceramics
5)
Manipulation of reversible hydrocolloids
6)
Zinc phosphate cement
7)
Metal modified glass ionomer cements
8)
Modulus of elasticity
9)
Casting shrinkage
10)
Conventional composites
WRITE BRIEFLY ON
:
10x2=20
11)
Baseplate wax
12)
Composition of polyether impression material
13)
Desorption of DFG (Direct Filling Gold)
14)
Distinguish between abrasion and polishing
15)
Galvanic corrosion
16)
Trituration
17)
Polyacrylic acid
18)
Requirements of dent
al solders
19)
Types of copolymers
20)
Rouge
LENORA INSTITUTE OF DENTAL SCIENCES
CENTRAL LIBRARY
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402OR/421NR
B.D.S. DEGREE EXAMINATION JANUARY, 2014
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1)
Classify silver alloys; discuss composition,
properties, advantages and disadvantages of Hi
copper alloys.
3+2+2+1+1
=9
2)
Clas
sify dental ceramics. Write the composition and
the mechanism of bonding porcelain to metal.
4+2+3=
9
WRITE SHORT NOTES ON
:
8x4=32
3)
Osseointegration
4)
Hybrid composites
5)
Phosphate
-
Bonded investments
6)
Dental waxes
7)
Glass ionomer cement
8)
Dimensions of colour
9)
Alginate impression material
10)
Stainless steels
WRITE BRIEFLY ON
:
10x2=20
11)
Stress and strain
12)
Tissue conditioners
13)
Stages of polymerization
14)
Base
15)
Types of setting expansion
16)
Corrosion
17)
Fluxes
18)
Casting ring liners
19)
Separating media
20)
Rake angle
- - -
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402OR/421NR
B.D.S. DEGREE EXAMINATION JUNE, 2013
FIRST BDS EXAMINATION(OR) SECOND BDS EXAMINATION(NR)
DENTAL MATERIALS
Time : 3 Hours Max. Marks: 70
Note: Answer all questions.
Draw neat labeled diagrams wherever necessary.
1)
Classify dental impression materials. Write the
composition and setting mechanism of reversible
hydrocolloids.
9
2)
Classify dental cements. Write the composition,
setting reactions and properties of zinc
polycarboxylate cements
3+2+2+2=
9
WRITE SHORT NOTES ON
:
8x4=32
3)
Toxicity tests
4)
Bonding agents
5)
Casting defects.
6)
Abrasives
and polishing agents
7)
Methods of strengthening ceramics
8)
Cavity liners and bases
9)
Factors affecting success of amalgam restorations
10)
Hygroscopic setting expression
WRITE BRIEFLY ON
:
10x2=20
11)
Creep and flow
12)
Soft liners
13)
Internal porosity of denture base
14)
Yield strength
15)
Dental plaster
16)
Tarnish
17)
Forms of direct filling gold
18)
Divestment
19)
Dental burs
20)
Implant materials
- - -
LENORA INSTITUTE OF DENTAL SCIENCES
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402OR/421NR-FIRST B.D.S. DEG.EXAM-DECEMBER, 2012- (OR) SECOND BDS EXAM-(NR)
DENTAL MATERIALS-Time : 3 Hours-Max. Marks: 70-Answer all questions-Draw neat labeled
diagrams wherever necessary.
1..
Discuss in detail the composition, setting reaction, properties and uses o
f Alginate impression
materials3+2+2+2=9m
2
..
Classify composite resins. Write the composition, properties and uses of hybrid
composites3+2+2+2=9m
Write Short Notes On:
8 x 4=32m
3.
Biocompatibility
4. Diffusion 5. Gypsum
-
Bonded investments 6.
Physical stages of Polymerization
7.
Castable ceramics
8.
Glass Ionomer Cement
9.
Types of silver alloys
10.
Soldering and Welding
Write Briefly On:
10 x 2=20m
11.
Dimensions of color
12.
Etching
13.
Zones of Flame
14.
Proportional Limit
15.
Dental Stone
16.
Cavity Varnishe
s
17.
Pit and Fissure sealants
18.
Karat and fineness
19.
Types of casting machines
20.
Sandwich Technique
421NR-SECOND B.D.S. DEGREE EXAMINATION – JUNE, 2012-DENTAL MATERIALS
1..Classify
Dental Cements. Discuss the Composition, setting reaction and uses of zinc phosphate Cement=9m
2..
Classify Investment Materials. Discuss in Brief about Gypsum Bonded Investment Material
=9m
Write short notes on:
3..
Polycarboxylate Cement
4..
Admixe
d Alloys.
5..
Casting Shrinkage
6..
Impression Compound
7..
Advantage of Acrylic Resin as a Denture Base Material
8..
Condensation and Firing of Porcelain
9..
Hygroscopic setting expansion
10.
Flow and Creep
Write briefly on
:
11.
Anne
aling
12.
Gutta percha
13.
Dental Implant Materials
14.
Rouge
15.
Flux
16.
Powdered Gold
17.
Galvanism
18.
Gama
–
2 Phase
19.
Epoxy Resin Dies
20.
Percolation.
421/402-1
st
/ 2
nd
B.D.S. DEGREE EXAMINATION – DECEMBER,2011/JANUARY, 2012
1..What is biocompatibility? Describe the biological considerations of dental materials=2+7=9m
2..Discuss in detail the composition, properties, setting reaction, advantages and disadvantages of Glass
Ionomer Cements=2+2+2+2+1=9m
Write S
hort Notes On
: 8 x 4=32m
3..High Fusing alloys
.
4..Alginate impression material
.
5..Composition of Ceramics
.
6. Trituration
.
7..Cobalt Chromium Alloys
.
8. Degassing and compaction procedures in Direct Filling Gold
.
9. Physical stages of pol
ymerization
.
10. 18/8 stainless steel
.
Write Briefly On
:1
-
0 x 2=20m
11. Die materials
.
12. Sticky Wax
.
13. Zones of flame
.
14. Hue, Value and Chroma
.
15. Delayed expansion
.
16. Pickling
.
17. Calcium Hydroxid
e
.
18. Carat and Fineness
.
19. Advantages of EBA cements
.
20. Ductility and Malleability
.
421/402-FIRST B.D.S. DEGREE EXAMINATION – JUNE, 2011-DENTAL MATERIALS-OR( First
1..
Classify composite Resins and describe in detail the compos
ition, propertie
s and uses of hybrid
composites=9m
2..
Classify waxes in dentistry. Write the composition of inlay waxes. Explain the procedures for obtaining
the wax pattern for an inlay restoration=9m
Write Short Notes On
:8 X 4 =32m
3..
Types
and causes of casting defects.
4.
Resin modified glass ionomer
5.
Composition and setting reaction of polyethers.
6.
Tissue conditioners
7.
Bonding Agents.
8.
Define stress and strain. Mention different types of test
s for testing hardness
9.
Soldering and types of Dental Soldering techniques.
10.
Zinc oxide Eugenol impression paste
Write Briefly On
: 10 x 2 =20m
11.
EAMES’ Technique.
12.
Sensitization and Stabilization
13.
Rake angle
14.
Pit and fissure
sealants.
15.
Biological effects of mercury
16.
Cavity liners
17.
Composition of Dentifrices.
18.Sandwich Technique 19.
Syneresis and Imbibition
20.
Cement base.
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421/402-FIRST & SECOND B.D.S. DEG. EXAM – DEC., 2010/JANUARY, 2011-DENTAL MATE.
1..
Classify and give the ideal requirements of the denture base materials and discuss various modes of
polymerization of denture base resins=9m
2.
Enumerate various base metal alloys and write
in detail about stainless steel=9m
Write Short Notes
On
: 8 x 4 =12m
3.
Die stone
4.
Compressive strength
5.
Impression compound
6.
Resilient liners
7. Fillers in Impression Materials 8. High Copper Amalgam Alloys 9. Glass
I
onomer cements
10.
Vacuum fired porcelains
W
rite Briefly On
: 10 x 2 =20m
11.
Factors affecting rate of abrasion
12.
Zinc Oxide Eugenol cements
13.
Flux and anti flux
14.
Electropolishing
15.
Residual Monomer
16.
Wet Corrosion
17.
18
-
8 stainless steel
18.
Annealin
g
19.
Sodium Alginate solution
20.
Welding and soldering
421-SEOND B.D.S. DEG. EXAMINATION – JANUARY, 2010-DENTAL MATERIALS-(New Reg.)
1..
Classify impression materials. Wr
ite the composition and setting
reaction of Zincox
ide
-
Eugenol
impression paste-9m
2..
Write the composition and manip
ulation of Glass ionomer cement=9m
Write Short Notes On
:8 x 4 =32m
3.
Creep and flow
4.
Physical properties of polymers
5.
Accelerators and retarders
6.
Microfil
led composites
7.
Types of dental ceramics
8.
Casting machines
9.
Tissue conditioners
10.
Zinc phosphate cement
Write Briefly On
: 10 x 2 =20m
11.
Ductility and malleability
12.
Bonding agents
13.
Acid etch technique
14.
Twinning
15.
Measurement of setting time
16.
Soldering and welding
17.
Composition of admixed alloys
18.
Casting ringliner
19.
Biocompatibility
20.
Stress corrosion
402-FIRST B.D.S. DEG. EXAM – JANUARY, 2010-DENT. MAT. & METLLURGY (O.R.)
PART-A (35 MARKS)
1..
Describe the composition, manipulation and uses of Inlay Casting Wax
=9m
Write Short Notes On: 4 X 4 =16m
2.
Bur Materials
3.
Casting Shrinkage
4.
Gamma I phase
5.
Divestment
W
rite Briefly On: 5 X 2 =10m
=
6.
Eutectic and Peritectic alloys
7.
Hygroscopic Expansion
8.
Silicate Cement
9.
Hardness
10.
Dentin Bonding Agents
PART
-
B(35 MARKS)
11.
Classify gypsum materials. Discuss in detail dental stone
=9m
Write Short
Notes On
:
4 x 4 =16m
12.
Gold Foil
13.
Base Metal alloys
14.
Curing cycle of Denture Base Resins
15.
Soft Liners
Write Briefly
=
16.
Pumice
17.
Brazing
18.
Creep
19.
Wetting agent
20.
Rake angle in bur tooth
SECOND B.D.S. DEGREE EXAMINATION – JUNE, 2009-DENTAL MATERIALS-N.R.
1..
Classify impression materials. Write the composition a
nd setting reaction of alginate=9m
2.
Write the composition and manipulation of zinc phosphate cement
=9m
Write Short Notes On:8 X 4 =32m
3.
Adhesion and b
onding
4.
Acrylic dental resins
-
physical properties.
5.
Hygroscopic setting expansion
6.
Traditional composites
7.
Castable glass
-
ceramics
8.
Causes of defective castings
9.
Compression molding technique
10.
R
esin
-
modified glass ionomer cement
Write Briefly On: 10 X 2 =20m
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CENTRAL LIBRARY
11
11.
Elastic modulus
12.
Finishing and polishing agents
13.
Types of stainless steel
14.
Annealing
15.
Disadvantages of addition silicone
16.
Classification of casting all
oys
17.
Trituration
18.
Die materials
19.
Toxicity tests
20.
Electrochemical corrosion
402-FIRST B.D.S. DEG. EXAM. – JUNE, 2009-DENTAL MATERIALS & METLLURGY (O.R.)
PART-A (35 MARKS)
1..
What are adhesive cements? Describe the compos
ition, manipulation and uses of ty
pe I Glass Ionomer
Cement (GIC)=9m
Write Short Notes On: 4 X 4 =16m
2.
Calcium Hydroxide
3.
Galvanism
4.
Dual Core Resin
5.
Polyether rubber base impression material
Write Briefly On
:
5 x 2 =10m
6.
Ab
rasion and Polishing
7.
Plaster of Paris
8.
Bonding Agents
9.
Flux
10.
Sandwich Technique
PART-B(35 MARKS)
11.
Classify Dental amalgam alloys and discuss the composition, setting reaction and advantag
es of High
-
Copper amalgam alloy=9m
Write Short
:4 x 4=12.Soldering and Welding 13.Annealing 14.Zinc Oxide Eugenol 15.Base plate wax
Write Briefly On
:
5 x 2 =10m
16.
Suck back porosity
17.
Stress and Strain
18.
Sprue former
19.
Tissue conditioner
20.
Gutta Percha
402-FIRST B.D.S. DEG. EXAM – JUNE, 2008-DENT. MATERIALS & METLLURGY (O.R.)
PART – A (35 MARKS)
1..Classify Gypsum products. Write the composition, setting reaction of dental Plaster & dental stone=9m
Write Short Notes On:= 4x4=2. Bonding Agent 3. Heat Cure Acrylic Resin
4. Accelerators and Retarders for Gypsum products 5.
Condensation Silicone Impression Material.
Write Briefly On:= 5x2=6. Modulus of Elasticity. 7. Wet Field Technique. 8. Copolymerization. 9.
Porosity in Denture Base. 10.Fusion Temperature.
PART – B (35 MARKS)
11.Classify Dental cements according to the use and give in detail the composition, setting reaction and
properties of zinc polycarboxylate cements=9m
Write Short Notes On:= 4x4=12. Gypsum Bonded Investment. 13. Cavity varnish, liner and base.
14. Composition of Restorative porcelain. 15. Design of Dental bur.
Write Briefly On: =5x2=10m
16. Delayed Expansion. 17. Creep. 18. B – Titanium alloy. 19. Welding and soldering. 20. Dentifrices.
402-FIRST B.D.S. DEG. EXAM – JUNE, 2008-DENTAL MATERIALS & METLLURGY (O.R.)
PART – A (35 MARKS)
1..Classify Gypsum products. Write the composition, setting reaction of dental Plaster and dental stone=9m
Write Short Notes On=4x4=2. Bonding Agent 3. Heat Cure Acrylic Resin
4. Accelerators and Retarders for Gypsum products 5. Condensation Silicone Impression Material.
Write Briefly on=5x2=10m=6. Modulus of Elasticity. 7. Wet Field Technique.
8. Copolymerization. 9. Porosity in Denture Base. 10.Fusion Temperature.
PART – B (35 MARKS)
11.Classify Dental cements according to the use and give in detail the composition, setting reaction and
properties of zinc polycarboxylate cements=9m
Write Short Notes On:= 4x4=16
12.Gypsum Bonded Investment. 13. Cavity varnish, liner and base.
14.Composition of Restorative porcelain. 15. Design of Dental bur.
Write Briefly On:= 5x2=10m
16. Delayed Expansion. 17. Creep. 18. B – Titanium alloy. 19.Welding and soldering. 20. Dentifrices.
LENORA INSTITUTE OF DENTAL SCIENCES
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402-B.D.S. DEGREE EXAMINATION – FEBRUARY, 2008-FIRST BDS EXAM
PART – A (35 MARKS)
1. Classify Impression Materials. Describe the Composition, setting reaction, manipulation of Impression
Compound.=9m
2. Write Short Notes On: =4x4=a) Light cure Composite resin b) Hygroscopic setting Expansion
c) Composition of Alginate Impression material d) Duplicating Materials
3. Write Briefly On:= 5x2=a) Crosslinking agents for Acrylic resin b) Separating Media
c) Polyurethane polymer d) Soft liner e) Ductility and Malleability
PART – B (35 MARKS)
1. Classify Dental Cements. Add a note on Glass ionomer Cement.=9m
2. Write short notes on: =4x4=a) Zinc Oxide Eugenol Cement b) Stages of firing of Dental Porcelain
c) Metal-Ceramics d) Abrasives and Polishing agents
3. Write briefly: =5x2=a) Annealing b) Mechanical Trituration c) Divestment d) Flux e) Nitinol
NR=AUGUST, 2007-FIRST BDS EXAM -DENTAL MATERIALS & METLLURGY
Part-A
1. Classify Impression materials. Describe the composition, Setting reaction and uses of Irreversible
Hydrocolloid Impression material=9m
Write short notes on: 4 x 4 =16m; 2. Stress and strain 3. Hygroscopic setting expansion
4. Physical stages of polymerization 5. Electroformed dies
Write briefly on: 5 x 2 =10m; 6. Hysterisis and its significance 7. Synthetic gypsum
8. Residual monomer 9. Sodium alginate solution 10. Micro leakage and its significance
Part-B
11.Write the Skinners classification of Dental cements. Describe the Zinc Phosphate Cement=9m
Write short notes on: 4 x 4 =16m; 12. High copper amalgam alloys 13.Hybrid composite resins
14.Composititon and properties of Inlay was 15. Aluminous porcelain
Write briefly on: 5 x 2 =10m; 16. Gold foil 17. Wet corrosion 18.Incomplete casting
19. Pumice 20. Enumerate dental implant materials
APRIL, 2007
PART - A
1. Classify gypsum materials. Discuss in detail the Dental plaster=9m
2. Write short: 4x4=a) Dimensions of colour b) Corrosion c)Filled resins d)Describe the properties of dental wax
3. Write briefly on: 5x2=10=a) Refractory materials b) Describe the composition of dental ceramics
c) Syneresis and Imbibition d) Role of plasticizer in acrylic resins e) Resiliency
PART – B
1. Classify dental casting alloys. Describe the mechanical properties of casting gold alloys. Add a note on heat
treatments=9m.
2. Write short notes on: 4x4=16=a) Micro filled composite resins b) Zinc poly carboxylate cement
c) Setting reaction of high copper amalgam alloys d) Cavity liners and bases
3. Write briefly on: 5x2=a) Frozen glass slab method b) Casting ring liner c) Solders d) 18-8 stainless steel
e) Laminate technique
SEPTEMBER.-2006
Part-A
1. Classify denture base materials. Describe the compression molding technique=9m
2. Write short notes on: 4 x 4 =16m; a) Gypsum bonded investment material b) Hardness c) Die stone
d) Manipulation of rubber base impression material
3. Write briefly on: 5 x 2 =10m; a) Ductility and malleability b) Soldering and Welding
c) Non eugenol impression paste d) Nitinol e) Percolation
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Part-B
4. Classify dental amalgam alloys.Describe the composition, properties & manipulation of admixed amalgam
alloys
5. Write short answers on: 4 x 4 =16m; a) Glass Ionomer cement b) Dentine bonding agents
c) Properties of metal ceramic alloys d) Induction casting machine
6. Write briefly on: 5 x 2 =10m; a) Mat gold b) Glaze c) Curing cycles d) Tissue conditioners
e) Composition of impression compound.
FEBRUARY-2006
Part-A
1. Classify composite resins and describe in detail the composition, properties and uses of hybrid composites=9m
2. Write short answers on: 4 x 4 =16m; a) Free radical polymerization
b) Composition and properties of alginate impression material
c) Setting reaction and chemical stages in setting of gypsum d) Stress-Strain curve
3. Write briefly on: 5 x 2 =10m; a) Significance of fusion temperature of impression compound
b) Non-eugenol impression paste c) Fissure conditioners d) Activators and intiator in cold acrylic resins
e) Composition of Additions Silicone impression material
Part-B
4. Classify Dental cements according to the use and give in detail the composition, setting reaction and
properties of zinc polycarboxylate cements=9m
5. Write short answers on: 4 x 4 =16m; a) Properties of Dental amalgam b) Types of Direct filling gold
c) Stabilization and sensitization of stainless steel d) Porosites in dental casting
6. Write brief answers on: 5 x 2 =10m; a) Sticky wax b) Softening heat treatment c) Uses of Titanium
d) Polishing agents for cast restorations e) Giazing
AUGUST-2005 (New Regulations)
Part-A
1. Enumerate the final impression materials for edentulous arches and write about composition, manipulation
and properties of the Zinc Oxide Eugenol Impression pastes =9pages
2. Write short answers on: 4 x 4 =16marks; a) Curing cycles for heat cure acrylic resin
b) Biocompatibility of Dental Materials c) Separating media used in dentistry d) Die stone
3. Write briefly on: 5 x 2 =10m=a) Define Glass transition temperature b) Contents in composite resins
c) Mention activating systems for autopolymerising resins d) Define elasticity and stiffness
e) Drawbacks of alginates
Part-B
4. Classify silver amalgam alloys. Write in detail composition and setting reaction of high-copper silver alloys=9m
5. Write short answers on: 4 x 4 =16marks; a) Glass ionomer cement b) Sprue-formers
c) Ideal requirements of Dental solder d) Factors affecting rate of abrasion
6. Write brief answers on: 5 x 2 =10marks; a) Define and give the purpose of degassing gold foil
b) Purpose of condensation of amalgam mass in cavity
c) Contents in Zinc Polycarboxylate cement powder and liquid d) Die hardener and die spacer
e) Define sensitization and stabilization
MAR/APR.2005.
Part-A
1. Ennumerate various synthetic resins and discuss the composition and manipulation and uses of Heat-cure
acrylic resins=9marks
2. Write short notes on: 4 x 4 =16marks; a) Polyether rubber base impression material
b) Composition of composite resins c) Dental stone d) Pit and fissure sealants
3. Write briefly on: 5 x 2 =10marks; a) Ductility and Malieability b) Hygroscopic expansion
c) Setting of polysulphide rubber base material d) Di-vestment e) Wet-field technique
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Part-B
4. Classify Dental amalgam alloys and discuss the composition, setting reaction and advantages of High-Copper
amalgam alloy =9marks
5. Write short answers on: 4 x 4 =16marks; a) Liners and bases for dental restoration
b) Metal-ceramic bond
c) Abrasive agents used in dentistry d) Contents in Dental Casting Gold alloys
6. Write brief answers on: 5 x 2 =10marks; a) Composition of inlay wax b) Types of Dental Ceramics
c) Setting reaction of Zn-PO4 Cement d) Cohesive Gold e) Flux and anti flux
OCTOBER, 2004. (New Regulations)
Part-A
1. Classify impression materials. Describe the composition, setting reaction and factors affecting setting time of
Zinc Oxide Eugenol paste =9m
2. Write short answers on: 4 x 4 =a) Duplicating materials b) Die stone c) Curing cycles d) Dimensions of colour
3. Write briefly on: 5 x 2 =a) Syneresis and Imbibition b) Synthetic Gypsumc) Coupling agents in composite resins
d) Reline technique for elastomeric impressions e) Cross linking agents and their role in acrylic resins.
Part-B
4. Discuss various steps in casting procedure of inlay and add a note on shrinkage porosity=9m
5. Write short notes on: 4 x4 =16m; a) Admixed dental amalgam alloys b) Glass ionomer cements
c) Properties desirable in metal-ceramic alloys d) Baking stages in dental porcelain
6. Write briefly: 5 x 2 =a) Baseplate wax b) Mat gold c) Advantage of resin cements d) Nitinol e) Diamong.
APRIL/MAY,2004
Part-A
1. Enumerate various gypsum products and write in detail about manufacturing and standardization of Dental
plaster and Dental stone =9marks
2. Write short answers : 4 x 4;a) Peripheral Tracing sticks b) Addition Silicone Rubber base impression materials.
c) Hardness d) Self care acrylic resin.
3. Write briefly on: 5 x 2 =a) Purpose of soft liners b) Mention purpose of acid etching
c) Modes of activation for polymerization d) Crazing in acrylic bases
e) Role of Trisodium phosphate in alginate
Part-B
4. Enumerate various casting investment materials and write in brief about contents, manipulation and care while
using Phosphate Bonded investment materials. =9marks
5. Write short answers on: 4 x 4 =16marks; a) Composition of dental porcelain
b) Ideal requirements of inlay casting wax c) Electro-chemical corrosion d) Creep in amalgam
6. Write briefly on: 5 x 2 =10marks; a) Purpose of die spacer b) Define carat and fineness of gold alloys
c) Vent sprues d) Contents in modeling wax e) Pumice
OCTOBER, 2003. (N.R.)
Part-A
1. Write in brief about requisites for dental resins and composition, manipulation and processing of the heart cure
acrylic resin. =9marks
2. Write short answers on: 4 x 4=a) Duplicating materials b) Pit and fissure sealants c) Modulus of elasticity
d) Classification of resin based composites.
3. Write briefly on: 5 x 2 =10marks; a) Mention fillers in Dental Materials b) Syneresis and imbibition
c) Binders for casting investments d) Define electroplating and electropolishing e) Contents in die stone
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Part-B
4. Classify Dental Cements and write in brief about recent advances in Zinc Phosphate Cement. 9marks
5. Write short answers on: 4 x 4 =16marks; a) Alloys for metal ceramics b) Fluxes used in Soldering
c) Polishing agents d) Types of Stainless Steel
6. Write briefly on: 5 x 2 =10marks; a) Cavity liners b) Back pressure porosity
c) Contents in admixed silver alloys d) Define Trituration and condensation of amalgam. e) Uses of Titanium.
APRIL,2003. (N.R.)
Part-A
1. Write in detail about composition, manipulation & disadvantages of irreversible hydrocolloid impression materials
2. Write short answers on: 4 x 4 =16m=a) Gypsum bonded investments for casting b) Curing cycles
c) Soft liners for dentures d) Contents and their role in composite resins
3. Write brief answer: 5 x 2=a) Name any two pit and fissure sealants b) Uses of peripheral tracing compound
c) Crazing in acrylic resin d) Wet and dry strength e) Test for measuring setting time
Part-B
1. Enumerate various dental casting alloys. Write in brief about content of gold alloys =9marks
2. Write short answers on: 4 x 4 =16m=a) Ideal requirements of dental casting waxes. b) Casting defects
c) Phosphate banded investment d) Firing of dental porcelains
6. Write briefly: 5 x 2 =; a) Any four polishing agents b) Define Heat hardening and softening treatment
c) Contents of cavity varnishes d) Types of stainless stell e) Direct filing gold various type
OCTOBER, 2002
Part-A
1. Classify impression materials and describe in detail about contents, setting and properties of silicon rubber base
impression material=9marks
2. Write short answers on: 4 x 4 =16 a) Stress and Strain relation b) Die stone
c) Autopolymerising Acrylic resins d) Causes for porosities in resins
3. Write briefly: 5 x 2=a) Define hygroscopic expansion b) Physical stages in mixing of heat cure acrylic resin
c) Uses of agar-agar d) Define Imbibition & Syneresis e) Mention accelerator & retarder for ZOE paste.
Part-B
3. Classify Dental Amalgam alloys and write in detail about admixed Silver alloys =9marks
4. Write short answers on: 4 x 4=16 a) Ideal requirements of Orthodontic wires
b) Composition of various chrome-cobalt alloys c) Compensation of Casting Shrinkage d) Compomers
5. Write briefly on: 5 x 2 =10marks=a) Mention methods of melting of dental casting alloys
b) Define and give the cause of ‘Suck back’ porosities in casting
c) Uses of Tungsten Carbide d) Mention types of bond between porcelain and metal
e)Uses of modelling wax.
10
th
August, 2001. Time: 3hrs, Marks-80 - Answer Part A & B in separate answer books. Answer all questions –
Part-A
1. Classify and give ideal requirements of impression materials and discuss in detail contents, manipulation and
merits of Poly vinyl siloxane impression material –10marks
2. Write short Notes: 6x5=30m=a) Pit & fissure sealants b) Autopolymerising resins
c) Hygroscopic expansion d) Hardness tests e) Agar-agar
Part-B
1. Classify Dental amalgam alloys. Describe composition and properties of high copper containing silver alloys.
Add a note on setting reaction upon trituration -10marks
2. Write short Notes: 6x5=30m=a) Ideal properties of orthodontic wires b) Welding in dentistry
c) Wet corrosion d) Meta-ceramic alloy e) Glass ionomer cement f) Pumice
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FEBRUARY, 2000.
Part-A
1. Give the classification of Waxes. Write in detail about inlay casting wax =10marks
2. Write short notes on: 6x5=30m=a) Asbestos liner b) Spruing c) Gold alloys d) Eutectic solutions
e) Wrought metals f) Stages in Polymerization reaction
Part-B
3. What is amalgam? Give the classification properties and manipulation of dental amalgam =10marks
4. Write short notes on: 6 x 5 =30m=a) Heat cure acrylic b) Zincoxide eugenol paste c) Dental Plaster
d) Chromium-cobalt alloys e) Shrink-free ceramics
OCTOBER, 1999.
Part-A
1. What are gypsum products? Write in detail about the manipulation & properties of alpha Hemihydrate
material
2. Write short notes on: 6 x 5 =30m=a) Ductility and malleability b) Tarnish and corrosion
c) Soldering d) Synersis and imbibition e) Die and counter die materials f) Calcium Hydroxide
Part-B
3. What are base metal alloys? Describe different base metal alloys used in Dentistry?
4. Write short notes on: 6x5=a) Silicate Cement b) Admixed alloys c) Cavity Varnishes
d) Abrasives e) Modelling wax f) Pickling solutions.
10
th
April, 1999.
Part-A
1. Classify impression materials and discuss in detail about composition, manipulation and properties of
elastomeric impression material =10marks
2. Write short notes on: 6x5=a) Wanderval forces b) Separating media c) Hydroscopic expansion
d) Polymerization reaction e) White gold alloys f) Pit and fissure sealants
Part-B
3. What do you understand by ‘luting agents’? Mention the different luting agents and discuss the requirements
of luting agents =10marks
4.Write short: 6x5=a) Stainless steel alloys b) Agar-Agar material c) Cermet d) Copper amalgam e) Polishing ag
OCTOBER, 1998.
Part-A
1. Write in detail about composition and manipulation& properties of irreversible hydrocolloid impression
material
2. Write short notes on: 6x5=a) Stress and Stain b) Biologic consideration for selection of dental materials
c) Porosities in acrylic resin d) Tissue conditioners e) Casting Waxes
f) Accelerators and retraders to gypsum products.
Part-B
3. Classify noble metal costing alloys. Discuss the typical compositions of noble metal casting alloys =10marks
4. Write short notes: 6x5=a) Ideal requirements of base and cavity liners b) Zinc polycarboxylate cement
c) Electro polishing d) Compensation of casting shrinkage f) Diamong as an abrasive
APRIL, 1998
Part-A
1. Enumerate various denture base material mention ideal requirements of Denture base resins and stages in polymerization-10
2. Short Notes: a) Impression Plaster b) Duplicating Materials c) Creep d) Pit and fissure sealants
e) Imbibition and Syneresis f) Filters in Dental Materials –6x5=30marks
Part-B
1. Discuss in detail composition of Dental Porcelains. Add a note on Glazing –10marks
2. Short Notes: a) Resin Cements b) Fluxes for soldering c) Cavity liners d) Casting defects
e)Role of ingradiants in noble metal casting alloys
f)Composition & setting reaction of Phosphate bonded investments
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OCTOBER, 1997.
Part-A
1. What is Elastomer? Enumerate various elastometric impression materials and write in detail about addition
silicone rubber base materials –10marks
2. Short notes on any FIVE=5x5=a) A.D.A.–Specification b) Microfilled composite resin
c) Peripheral tracing compound d) Hardness tests e) Die materials f) Composition of cold cure acrylic resin
Part-B
3. Classify Dental amalgam alloys. Write in detail about composition and advantages of High copper containing
silver amalgam alloys –10marks
4. Short notes: 5 x 6 =30marks a) Glass ionomer cement b) Requirements of metal for metal ceramics
c) Factors affecting rate of abrasion d) Hygroscopic expansion e) Modelling waxes f) 18-8 stainless steel
APRIL, 1997.
Part-A
1. Classify investment materials. Describe in detail gypsum Bonded investment –10marks
2. Short Notes: a) Copper rich Amalgam alloy b) Sprue c) Soldering d) Polyether impression materials
e) Inlay Wax =5 x 5 =25marks
Part-B
3. Give Ideal requirement of denture Base Materials. Explain the defects seen in Heart cure acrylic resin denture base=10m
4. Short notes on : a) Denture reliners b) Poly carboxylate cement c) Microfilled composite resin
d)Polishing agents e)Setting reaction in Alginates f)Advantages of Dental Porcelain as restorative material
=6x5
OCTOBER, 1996.
Part-A
1. Classify Waxes. Write in detail about inlay waxes. =10marks
2. Short Notes: a) Direct bonding cement b) Gypsum bonded investment c) Sprue d) Polishing agents
e) Mat Gold f) Strength and hardness =5x5=25marks
Part-B
3. What are heat cure resins? Give the composition, properties and manipulations of Heat cure Resins =10m
4. Short Notes: a) Chrome-Cobalt b) Irreversible impression material c) Tarnish d) Dental plaster
e) Model Cement f) High cure Amalgam 5 x 6 =30marks
